GQZ J90354/748 Tapered Roller Bearing J90354/J90748 90×190×50.8mm Separable Cone & Cup Assembly

J90354/748 (Full marking: J90354/J90748) is J-series single row tapered roller bearing.

This assembly consists of separable inner cone J90354 and outer cup J90748. The cone assembly with rollers and cage can be mounted separately from the outer ring, convenient for installation, inspection and maintenance.

It withstands combined radial load and one-way axial load. Optimized tapered roller contact geometry delivers strong shock resistance and heavy load capacity. Widely applied on heavy-duty vehicle drive assemblies, construction machinery, mining equipment, industrial reducers and low-speed heavy rotary machinery.

Formal quotation will be sent within 24 hours upon your inquiry.

Model

J90354/748 (J90354 / J90748)

Dimensions

d90 mm, D190 mm, T50.800 mm

Cone width B

46.038 mm

Cup width C

31.750 mm

Net weight

approx 6.0 kg

Structure

Single row tapered roller bearing, separable cone + cup

Material

GCr15 bearing steel, pressed steel cage

Basic dynamic load Cr

383000 N

Basic static load C0r

392000 N

Limiting speed (grease)

1700 rpm

Complete dimension drawings and load data available on request.

1. Separable cone and cup design simplifies assembly, disassembly and routine maintenance
2. Excellent capacity to bear combined radial and single-direction axial thrust loads
3. Optimized roller contact surface reduces stress concentration, improves shock resistance
4. Standard J series dimension, fully interchangeable with international mainstream brands
5. Stable performance under low-speed heavy load and intermittent impact working conditions
6. Customizable: OEM laser marking, extreme pressure grease, different precision tolerance

• Heavy-duty trucks, commercial vehicle axle and transmission components
• Excavators, loaders and other construction machinery rotary units
• Mining equipment, quarry machinery and heavy conveyor systems
• Low-speed heavy industrial gearboxes and speed reduction assemblies
• Large agricultural machinery and off-road heavy equipment transmission parts

• 25 years professional bearing manufacturer, products exported globally.
• Precision grinding for tapered raceways and rollers, strict contact pattern inspection.
• Complete dimensional verification for J series metric tapered roller bearings.
• 24-hour technical support for preload adjustment and installation guidance.
• Ample stock for machinery distributors.
• Precise dimensions and stable service performance.

• GCr15 raw material quenching & tempering hardness inspection
• Precision superfinishing for tapered raceways and rollers
• Contact trace, internal clearance and rotational smoothness testing
• Dimension tolerance and surface appearance defect inspection

If you need J90354/748 tapered roller bearings:

Send inquiry to obtain below supports:

• Quick quotation within 24 hours
• Interchangeable bearing cross reference service
• Competitive factory bulk price
  Contact our sales team for full datasheets and formal offer.